©Continuent 2012. MySQL High Availability Power and Usability Giuseppe Maxia QA Director - Continuent, Inc 1 Wednesday, December 05, 12
MySQL high availability power and usability
Nov 07, 2014
Solving MySQL high availability issues with Continuent Tungsten
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©Continuent 2012.
MySQL High AvailabilityPower and Usability
Giuseppe MaxiaQA Director - Continuent, Inc
1Wednesday, December 05, 12
About me• Giuseppe Maxia, a.k.a. The Data Charmer
• Worked in the MySQL team (2006-2010)
• Now QA Director, Continuent, Inc
• Using MySQL since 2001
• Creator and maintainer of MySQL Sandbox
• Community Contributor of the year (2006, 2011)
• Oracle ACE (2011)
• Oracle ACE Director (2012)
• BLOG: http://datacharmer.blogspot.com
A
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ToC
• What a demanding database user wants
• easy switch
• easy and automated failover
• easy recovery
• disaster recovery stand-by site
• easy site switch and failover
• easy site recovery
• What Continuent Tungsten does
• all of the above
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What's an EASY failover
• A failover or switch is EASY if:
• I can promote a slave easily
• I can tell easily the other slaves who is new master
• I can get a failover to happen automatically
• Applications keep working without changes
• Failovers only happen when the server is truly dead
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Translation: What a DB user wants is:
• Transparency
Or
• the ability of using a RESILIENT database system without need to know what's going on
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How a non-HA system works
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App Logic
MySQL Client API
master
slaveslave
load balancer
RR
W
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How a non-HA system works (after a switch)
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App Logic
MySQL Client API
master
slaveslave
load balancer
switch
?
?RR
W
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MasterSlave Slave
App Logic
Tungsten Connector
Replicator Replicator Replicator
App Logic
Tungsten Connector
Manager Manager Manager
Monitoring and control
Monitoring and control
db2 db1 db3
Data Service: sj
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How a Tungsten HA system works
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App Logic
MySQL Client API
load balancerR
R
W
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How a Tungsten HA system works
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App Logic
MySQL Client API
load balancer
switch
W
R
R
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Multiple site demo
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Installation principles
• Install from one location only
• Remote installation of all services
• No partial installations: Either all servers are OK, or none will be installed
• Parallel installation
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What does the installation do
host4
1: Validate all servers
host1 host2 host3
Report all errors
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What does the installation do
host4
1: (again) Validate all servers
host1 host2 host3
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What does the installation do
2: install Tungsten in all servers
host3
$CONTINUENT_HOME/ config/ releases/ backups/ thl/ tungsten/
host4host1
host2
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Installation demo
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Standard HA system demo
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How a "smart scale" Tungsten HA system works
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App Logic MySQL Client APIWRR
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Standard HA "smart scale" system demo
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How a multi site (non HA) system works
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App Logic
MySQL Client API
master
slaveslave
load balancer
RR
W
relay
slaveslave
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How a multi site (non HA) system works
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App Logic
MySQL Client API
master
slaveslave
load balancer
RR
W
relay
slaveslave
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How a multi site (non HA) system works
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master
slaveslave
load balancer
RR
relay
slaveslave
App Logic
MySQL Client API
W
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How a multi-site Tungsten system works
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App Logic
MySQL Client API
W
load balancer
RR
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How a multi-site Tungsten system works
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App Logic
MySQL Client API
W
load balancer
RR
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How a multi-site Tungsten system works
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App Logic
MySQL Client API
W
load balancer
RR
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Parting thoughts
• The key elements of HA are:
• transparency
• ease of use
• Continuent Tungsten
• makes cluster usage transparent
• o!ers automatic failover
• makes cluster management easy
• deals with multiple sites with great ease
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Continuent Website:http://www.continuent.com
Tungsten Replicator 2.0:http://code.google.com/p/tungsten-replicator
Our Blogs:http://scale-out-blog.blogspot.comhttp://datacharmer.blogspot.comhttp://flyingclusters.blogspot.com
560 S. Winchester Blvd., Suite 500 San Jose, CA 95128 Tel +1 (866) 998-3642 Fax +1 (408) 668-1009e-mail: [email protected]
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